.headNav{
    width: 7.5rem;
    height: 1rem;
    background: #fff;
    border-bottom: 1px solid #efefef;
    position: fixed;
    z-index: 10;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.headNavGobackIcn{
    width: 1rem;
    height: 1rem;
    text-align: center;
    line-height: 1rem;
}
.headTitle{
    font-size: 0.32rem;
}
.headBtn{
    width: 1rem;
    height: 1rem;
    line-height: 1rem;
    text-align: center;
    font-size: 0.32rem;
}